rerun-io/rerun
Nov 2025 – Mar 2026
5 Months active
Languages Used
C++CMakeMarkdownPythonRustRRDTOMLYAML
Technical Skills
API developmentC++C++ developmentCI/CDCMakeCode Readability Improvement
Michael Grupp
PROFILE
Michael Grupp
Michael contributed to the rerun-io/rerun repository by developing and refining core features for 3D visualization, robotics data integration, and developer tooling. He modernized URDF and ROS 2 data pipelines, enabling real-time visualization and semantic data transformations using Rust and Python. His work included modularizing the URDF loader, enhancing MCAP and Foxglove data interoperability, and improving error handling and release processes. Michael also introduced robust testing, documentation, and CI improvements, ensuring maintainable and extensible code. Through backend development, UI enhancements, and scripting, he delivered solutions that improved reliability, onboarding, and workflow efficiency for both end users and contributors.
Overall Statistics
Feature vs Bugs
84%Features
Repository Contributions
77Total
Bugs
5
Commits
77
Features
26
Lines of code
10,238
Activity Months5
Your Network
80 peopleSame Organization
@rerun.io8
Work History
March 2026
2 Commits • 2 Features
Mar 1, 20262026-03 monthly summary for rerun-io/rerun: Delivered two key features that materially improve release readiness and data interoperability, with targeted fixes and strong test coverage. The work enhances business value by accelerating patch selection, reducing release risk, and broadening timestamp compatibility across downstream tools.
2 Commits • 2 Features
Mar 1, 20262026-03 monthly summary for rerun-io/rerun: Delivered two key features that materially improve release readiness and data interoperability, with targeted fixes and strong test coverage. The work enhances business value by accelerating patch selection, reducing release risk, and broadening timestamp compatibility across downstream tools.
March 2026
February 2026
29 Commits • 10 Features
Feb 1, 2026February 2026 monthly summary for rerun development: Key features delivered: - URDF loader refactor: split loader_urdf into a dedicated directory module to improve maintainability and extensibility, with no public API changes. - Performance- and correctness-focused data loading: moved URDF joint transform computation into Rust and integrated via Python bindings; added string utilities and Foxglove loader support through lenses (including Log and FrameTransform). - MCAP data loader enhancements: added Foxglove support for Log, FrameTransform, RawImage, and PointCloud via lenses with associated tests and robust handling (frame_id semantics and image/padding considerations). - UX and data representation: introduced EntityPath::ui_string() to render UI-friendly strings with special characters; added layer identifier 'foxglove' to rerun mcap convert for better categorization. - Documentation, releases, and docs hygiene: comprehensive updates to MCAP docs, release notes, and changelog tooling; enhanced README to differentiate ROS 2 vs Foxglove flows; improved RELEASES.md and related docs. Major bugs fixed: - Resolved orphaned tests for semantic transforms and improved test locality within re_sdk and re_lenses. - Enhanced error context for LensError to aid debugging; corrected changelog tooling and light-mode UI button rendering issues. - Fixed missing file include in web_viewer/Cargo.toml to ensure cargo publish reliability. Overall impact and value: - Significantly improved maintainability, testability, and extensibility of data loading pipelines, enabling richer interoperability with ROS 2 and Foxglove ecosystems. - Reduced release risk through improved tooling, docs, and error reporting; faster onboarding for contributors with clearer code organization and UI/string handling. Technologies and skills demonstrated: - Rust (core data transforms and loader refactors), Python bindings, MCAP, Foxglove lens integration, UI string handling, and robust error reporting; release engineering and documentation discipline.
February 2026
29 Commits • 10 Features
Feb 1, 2026February 2026 monthly summary for rerun development: Key features delivered: - URDF loader refactor: split loader_urdf into a dedicated directory module to improve maintainability and extensibility, with no public API changes. - Performance- and correctness-focused data loading: moved URDF joint transform computation into Rust and integrated via Python bindings; added string utilities and Foxglove loader support through lenses (including Log and FrameTransform). - MCAP data loader enhancements: added Foxglove support for Log, FrameTransform, RawImage, and PointCloud via lenses with associated tests and robust handling (frame_id semantics and image/padding considerations). - UX and data representation: introduced EntityPath::ui_string() to render UI-friendly strings with special characters; added layer identifier 'foxglove' to rerun mcap convert for better categorization. - Documentation, releases, and docs hygiene: comprehensive updates to MCAP docs, release notes, and changelog tooling; enhanced README to differentiate ROS 2 vs Foxglove flows; improved RELEASES.md and related docs. Major bugs fixed: - Resolved orphaned tests for semantic transforms and improved test locality within re_sdk and re_lenses. - Enhanced error context for LensError to aid debugging; corrected changelog tooling and light-mode UI button rendering issues. - Fixed missing file include in web_viewer/Cargo.toml to ensure cargo publish reliability. Overall impact and value: - Significantly improved maintainability, testability, and extensibility of data loading pipelines, enabling richer interoperability with ROS 2 and Foxglove ecosystems. - Reduced release risk through improved tooling, docs, and error reporting; faster onboarding for contributors with clearer code organization and UI/string handling. Technologies and skills demonstrated: - Rust (core data transforms and loader refactors), Python bindings, MCAP, Foxglove lens integration, UI string handling, and robust error reporting; release engineering and documentation discipline.
January 2026
16 Commits • 4 Features
Jan 1, 2026January 2026 — Delivered major platform updates across URDF visualization, MCAP loading, and user experience, with a focus on reliability, performance, and extensibility. These improvements enable realistic, real-time visualization, semantic data transformations during MCAP loading, and robust data ingestion in production pipelines. Highlights: - URDF Visualization Modernization: migrated to built-in URDF loader, ROS Kilted compatibility, TB4 simulation with depth camera, and improved real-time animation feedback; streamlined documentation. - Dynamic Mesh Update Demonstration: animated_urdf.py shows dynamic query and update of a link, enabling smoother visual feedback and easier debugging (RR-3401). - Lens Framework and MCAP Loader Enhancements: introduced a dedicated re_lenses crate and added support to apply lenses during MCAP data loading, while preserving API compatibility for existing examples. - MCAP Processing Robustness and Import Compatibility: fixed MCAP PointCloud2 parsing for small datasets; clarified BinaryToListUInt8 nullability; improved import path handling and warnings around CoordinateFrame usage. - UX Improvements and CLI Reliability: enhanced screenshot copy feedback and autocomplete navigation; CLI error handling now captures Ctrl-C and returns a clean exit code (130); documentation expanded for ROS 2 message support and memory UI guidance.
16 Commits • 4 Features
Jan 1, 2026January 2026 — Delivered major platform updates across URDF visualization, MCAP loading, and user experience, with a focus on reliability, performance, and extensibility. These improvements enable realistic, real-time visualization, semantic data transformations during MCAP loading, and robust data ingestion in production pipelines. Highlights: - URDF Visualization Modernization: migrated to built-in URDF loader, ROS Kilted compatibility, TB4 simulation with depth camera, and improved real-time animation feedback; streamlined documentation. - Dynamic Mesh Update Demonstration: animated_urdf.py shows dynamic query and update of a link, enabling smoother visual feedback and easier debugging (RR-3401). - Lens Framework and MCAP Loader Enhancements: introduced a dedicated re_lenses crate and added support to apply lenses during MCAP data loading, while preserving API compatibility for existing examples. - MCAP Processing Robustness and Import Compatibility: fixed MCAP PointCloud2 parsing for small datasets; clarified BinaryToListUInt8 nullability; improved import path handling and warnings around CoordinateFrame usage. - UX Improvements and CLI Reliability: enhanced screenshot copy feedback and autocomplete navigation; CLI error handling now captures Ctrl-C and returns a clean exit code (130); documentation expanded for ROS 2 message support and memory UI guidance.
January 2026
December 2025
15 Commits • 4 Features
Dec 1, 2025December 2025 monthly summary for rerun-io/rerun. Focused on delivering foundational URDF/ROS2 integration, 3D visualization enhancements, and quality improvements that directly boost robotics workflow fidelity, data provenance, and developer productivity.
December 2025
15 Commits • 4 Features
Dec 1, 2025December 2025 monthly summary for rerun-io/rerun. Focused on delivering foundational URDF/ROS2 integration, 3D visualization enhancements, and quality improvements that directly boost robotics workflow fidelity, data provenance, and developer productivity.
November 2025
15 Commits • 6 Features
Nov 1, 2025November 2025 monthly summary for rerun-io/rerun: Delivered a set of high-impact features and fixes focused on rendering fidelity, data interoperability, and developer experience. Highlights include improved 3D viewer UX and error reporting, corrected rendering color fallbacks, enhanced URDF loading workflow, an MCAP/Foxglove integration example, and strengthened developer tooling and SDK stability. These changes advance reliability, usability, and integration capabilities for end users and contributors across the project.
15 Commits • 6 Features
Nov 1, 2025November 2025 monthly summary for rerun-io/rerun: Delivered a set of high-impact features and fixes focused on rendering fidelity, data interoperability, and developer experience. Highlights include improved 3D viewer UX and error reporting, corrected rendering color fallbacks, enhanced URDF loading workflow, an MCAP/Foxglove integration example, and strengthened developer tooling and SDK stability. These changes advance reliability, usability, and integration capabilities for end users and contributors across the project.
November 2025
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Quality Metrics
Correctness96.2%
Maintainability91.8%
Architecture92.8%
Performance91.0%
AI Usage26.0%
Skills & Technologies
Programming Languages
C++CMakeMarkdownPythonRRDRustTOMLYAML
Technical Skills
3D Graphics3D modelingAPI DevelopmentAPI developmentArrowArrow LibraryC++C++ developmentCI/CDCLI DevelopmentCMakeCamera CalibrationCargoCode Readability ImprovementCode Refactoring
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